More than 100,000 people are marching through the streets of Dublin as part of a world-wide chain of rallies against a US-led war on Iraq.
Millions of anti-war campaigners have converged on more then 300 cities across the globe.
The crowd made its way down to O'Connell Bridge and then on to St Stephens' Green.
From there it is due to go to the Department of Foreign Affairs on St Stephens Green for a short time for speeches, then it will move on to the Central Bank on Dame Street for the main rally this afternoon.
The crowd will hear words from trade unionists and opposition TDs.